2018 BMW 4 Series Gran Coupe 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series Gran Coupe
• Trim: M Sport
• Version: 2.0 420i M Sport Auto RWD Euro 6 (s/s) 5dr (181 bhp)
• Year: 2018
• Mileage: 66,359 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Silver
• CO2: 134 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 66,359 miles on the clock, this 2018 BMW 4 Series Gran Coupe M Sport has done roughly 5,600 fewer miles than a typical 2018 BMW 4 Series Gran Coupe. The dealer is asking £12,995, which is £995 below the AskCar estimate of £13,990. To work out the AskCar estimate, we analyse UK dealer adverts for 1,195 BMW 4 Series Gran Coupe cars across different ages and specifications. This car was first seen in our listings data 20 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Revs in Boston. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £995 (7%) under the AskCar estimate of £13,990.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 1,195 priced BMW 4 Series Gran Coupe adverts across different ages and specifications, as of 5 November 2026.

A 2018 BMW 4 Series Gran Coupe with the 2.0 petrol engine is typically advertised at £13,400: the median of the 124 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2018 BMW 4 Series Gran Coupe has been on sale for at least 20 days.

Price history

AskCar first saw this advert on 16 October 2026 at £12,995. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 15 July 2027.

It failed its MOT on 16 July 2026 (offside rear tyre has ply or cords exposed 255/40/18 rf; nearside rear tyre tread depth below requirements of 1.6mm) and passed later the same day.

Advisories at the latest test: offside rear child seat fitted not allowing full inspection of adult belt; offside front tyre worn close to legal limit/worn on edge; nearside front lower suspension arm ball joint has slight play.

Mileage at that test: 62,965 miles, which matches the advertised 66,359 miles.

Advertised mileage is about 5,600 miles lower than the median mileage of a 2018 BMW 4 Series Gran Coupe on AskCar.

Similar cars

34 other 2018 BMW 4 Series Gran Coupe M Sport 2.0 petrol automatic hatchbacks are for sale at UK dealers, from £8,990 to £17,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series Gran Coupe M Sport, 2.0 petrol hatchback, grey. Mileage: 68,000 miles. Price: £13,500, £505 more than this car. Dealer: PF Car Sales in Burton upon Trent. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-e43cf74e6e83
• 2018 BMW 4 Series Gran Coupe M Sport, 2.0 petrol hatchback, grey. Mileage: 63,000 miles. Price: £13,995, £1,000 more than this car. Dealer: MSS Motor Group in Clacton-on-Sea. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-81de056937bd
• 2018 BMW 4 Series Gran Coupe M Sport, 2.0 petrol hatchback, black. Mileage: 70,169 miles. Price: £14,499, £1,504 more than this car. Dealer: MH Performance in Bradford. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-aca117df97c1

• The nearest: 2018 BMW 4 Series Gran Coupe M Sport, 2.0 petrol hatchback, black, 26 miles from this car. Mileage: 43,069 miles. Price: £17,115, £4,120 more than this car. Dealer: Hippo Motor Group Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-ff0e866c69da